Solve for x
x=-2
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9x+12-3x=0
Subtract 3x from both sides.
6x+12=0
Combine 9x and -3x to get 6x.
6x=-12
Subtract 12 from both sides. Anything subtracted from zero gives its negation.
x=\frac{-12}{6}
Divide both sides by 6.
x=-2
Divide -12 by 6 to get -2.
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Limits
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